ul>li{
    width: 70vw;
    height: 70vw;
    background-color: gray;
    border-radius: 20px;
    margin-bottom: 4vw;
    padding: 5vw 5vw;
}

ul>li:last-child{
    margin-bottom:0;
}

.yuan{
    width: 10vw;
    height: 10vw;
    background-color: black;
    border-radius: 50% 50%;
}

.hang{
   height: 10vw;
    width: 60vw;


}